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Messages - Lindzr

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The board is v9.

Do you think I could simply reverse the spindle parameters for higher analog frequency and lower analog frequency from 120hz low and 400 hz high to 400hz low and 120hz high?

There is a plugin but I am pretty sure its like the UC100 version where when you open it there is not reallly any parameters to change, but just signaling information.

I believe the board is V9. Literally bought it days ago from CNC4PC so I downloaded the current v9 manual. I will double check the stencil on it to be sure but the layout is exactly the same as the v9 manual. I'll feel pretty stupid if its not v9. Been fighting this speed thing for a few days, ha ha. It does seem to work with the PWM, just inverted in terms of the control, so that makes me pretty confident its v9 - the stencil does say 0-10v for sure on the one pin I just cannot say for sure it says v9. Easy to check when it is in front of me

It has a 12v input that powers the PWM 0-10v and I have a dedicated 12v switching supply.

I emailed CNCDrive tech support a 2nd time with both a question about the IEEE 1284 jumper and about the inverted speed control.  They are pretty good about replying but not sure if they will on a weekend.

I will report back with some more answers and waveforms assuming I can figure out how to use my scope (ha ha).  I've only ever turned it on a few times.. bought it with the intent of learning to use it some day. I have an electronics genius friend that could probably help me if he can spare time.

Thanks again both of you. Cool that I am getting replies Friday night (I am in LA time zone wise)

Disconnect VFD - noted. Will do so tomorrow. That said it is easy to see/hear if it was speeding up or slowing down rather than probe and watch my my meter

The UC400eth plugin is not like the ESS with a bunch of adjustable specs in the plugin interface. It just installs as is and there is not much you can change in it as far as I know. I will look again tomorrow to double check. If you have ever used a UC100 USB adapter the plugin is very similar. Installs with a windows installer and that's it.

I do have a scope but never really learned to use it but this might be a chance to try and learn how to do something with it. Maybe let me know what I should probe and look for -

That said is there not a way to invert the signal from Mach if that is the case? or perhaps change something in the XML? I did see a thread here where someone had a similar inverted signal issue where checking Step low active changed the signal as You and Tweakie suggested.. Unfortunately in my case it does not seem to.

The other thing I thought of was that I might be able invert some settings on the VFD assuming there is nothing I can do on the board/plugin/Mach?? Of course I was reluctant to do that and blow up my spindle due to my ignorance of what can and cannot be done in the various parameters. It's a Huanyang 2.2kw FYI if you think that is worth trying

Thanks again for all the help

I am not at my shop right now but if the IEEE 1284 spec vs standard printer port spec makes a difference in terms of the PWM signal that could be my issue IF the IEE1284 spec would literally invert the signal somehow vs std printer port.

The C11G board has a jumper for "1284 compliant" or "not", and my board is set to not compliant. I was not sure if the UC400eth was 1284 compliant. I even emailed their tech support and got an answer that cut and pasted from the manual that was not all that clear to me. see below. I interpreted it to be saying a standard printer port but maybe I will email again to be sure. I am not sure about the LED dimming and brightening (there are tons of leds that light up on the board) but I measured voltages going to VI on the VFD and they go down when I increase speed in Mach3 so I was assuming the signal was inverted from Mach, not that there was a possible issue with the board setup. see below for jumper section of manual on board as well as my correspondence with their tech support

I have a new bob with a jumper for IEEE 1284 compatibility
what I should set it to for the UC400ETH? – I see no mention of IEEE 1284 in the manual but want to be certain

Dear Lindsay,

In the manual you can find information about it on page 18-19.:

"There are 2 pieces of IDC26 I/O ports on the board. Both ports has the same pinout. The pinout is the same as the pinout of a standard LPT port in addition the 26. pin (there is no 26.pin on the LPT port) has a 5Volts power output."

"Plugging a IDC26 to DSUB25 female crimped cable to the IDC26 ports the DSUB25 port will have exactly the same pinput as the standard LPT printer ports on PCs."

Best Regards,
              Csaba Nemeth
Csaba Nemeth
25 Pafrany utca, Pecs, 7633 Hungary

As I said in my 2nd post I tried that and it doesn't do anything different, the spindle still works incorrectly - slows down when I increase speed in Mach3. I am using PWM not step and direction spindle speed control if that makes a difference. Any other suggestions?

Tried step low - same thing but thanks for the idea. The spindle slows down if I increase the speed in Mach 3 or speeds up if I decrease the speed. The scale is off quite a bit too in Mach (10000 rpm is 16,270 on the VFD readout) but I can probably adjust the pulley ratio or change the min max voltages in the spindle parameters to fix that.

I need to get the speed thing fixed first before tuning it - What setting(s) in Mach would I change or invert to modify this behavior?

I have installed a CNC4PC C11G board and set up Mach3 as per the C11GS R1.5 Mach 3 settings (the boards are largely the same and there were no Mach 3 settings in the C11G r9 manual. )

Spindle turns on no problem with an M3 command and I can vary the speed but the spindle rotates slower when I increase the speed in mach 3 and goes faster when I decrease the speed in Mach3. The voltages on the 0-10v pin that connects to VI on my spindle go up when decreasing speed and go down when increasing speed - ie backwards to what they are supposed to. I am sure I just have a setting incorrect or some terminals incorrect.

Any ideas where to look? I am stumped   

Using a Huanyang VFD

No diagram but it looks like several optos on the board if I am right about and the description lists "...All of the input signal all the optical coupling isolation. P11, P12 port for high-speed optical coupling can be used for the spindle encoder, or handwheel..."

Looks like about 7 small rectangular optos where the writing is pretty microscopic and looks like it says B1624 but that does not seem to come up with anything when I google that number so I may not be reading it correctly.

I measure 15 and 18 mA with the resistor string I have now but that sits pretty much right at 5v when not tripped. How much over 5 volts do you think would be safe?

Their wiring diagram actually shows no resistors and all inputs on pin 13 (see attached) but I was hesitant to use the 12v limits on 5v inputs - everything I read about any other board it seems that people are pulling the voltage in line to roughly the input voltage so I was second guessing the diagram - maybe I am overthinking it... ha ha

Do you think the 12v straight in like the diagram would be safe? I know this might be hard to answer not having specs for the board but you seem to know your electronics more than I and might have some anecdotal evidence or at least suggest a cautious route.

I sent an email to John at Automationtechgiesinc where I got th eboard to double check but got no reply so thought I would post for some other input since I want to get this machine running.

Thanks for the reply - that is helpful.

I assume by PC you mean the computer and the voltages you refer to are for a desktop parallel port voltage of 5v or a laptop of 3.3v?

I am using a laptop but with a UC400 ethernet smooth stepper connected to the KL-1212. I believe looking at the manual that the UC400 operates at 5v though its input voltage is 24v. Do your comments still apply since it passes through the db25 on the KL1212 to the UC400? I assume that the UC400 interprets from the 1212 as if it were a parallel port

I am building a router and have installed some 12v SN04 NPN NO proximity switches for limits that appear to have 10k internal pullup resistors (measure 10k between signal and +12v - black and brown leads).

The switches are powered by a 12v tap from the board, the board powered by a 24v regulated switching supply

My KL1212 board reads 5v on the inputs. I assume directly hooking up the 12v limits may fry the inputs on the board so with a bit of trial and error using resistors from my stash at my shop I have installed resistors from signal to ground that pull the signal voltage to nearly exactly 5v when the sensor not tripped, but when tripped there is about 0.7v as opposed to 0v as a low value.

I am a bit green when it comes to the inductive switches (I have used simple mechanical limits on other machines) and I am not sure how Mach determines hi and low values in terms of tripping limits in the software but I assume perfect would be 5v for hi and 0v for low but is there any leeway? Will the 0.7v reliably trip the limits as a low value? The 0.7v low voltage did not seem to appreciably change with subtle changes to the resistor values that kept the 5v reasonably in line, so I opted to use values that got me as close as possible to the board input voltage before attaching the limits.

I know I could use other components to get more perfect switching but am curious if this will work as is in Mach?


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